HTTP status codes (IANA registry)

Assigned HTTP status codes from the IANA Hypertext Transfer Protocol (HTTP) Status Code Registry, one document per code with its reason phrase, class, and defining reference.

Browse 64 documents Use with your agent

Documents

Showing 1–24 of 64 documents

Document	Version
100 Continue HTTP 100 Continue is a 1xx informational status code in the IANA HTTP Status Code Registry.	v1
101 Switching Protocols HTTP 101 Switching Protocols is a 1xx informational status code in the IANA HTTP Status Code Registry.	v1
102 Processing HTTP 102 Processing is a 1xx informational status code in the IANA HTTP Status Code Registry.	v1
103 Early Hints HTTP 103 Early Hints is a 1xx informational status code in the IANA HTTP Status Code Registry.	v1
104 Upload Resumption Supported HTTP 104 Upload Resumption Supported is a 1xx informational status code in the IANA HTTP Status Code Registry.	v1
200 OK HTTP 200 OK is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
201 Created HTTP 201 Created is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
202 Accepted HTTP 202 Accepted is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
203 Non-Authoritative Information HTTP 203 Non-Authoritative Information is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
204 No Content HTTP 204 No Content is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
205 Reset Content HTTP 205 Reset Content is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
206 Partial Content HTTP 206 Partial Content is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
207 Multi-Status HTTP 207 Multi-Status is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
208 Already Reported HTTP 208 Already Reported is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
226 IM Used HTTP 226 IM Used is a 2xx successful status code in the IANA HTTP Status Code Registry.	v1
300 Multiple Choices HTTP 300 Multiple Choices is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
301 Moved Permanently HTTP 301 Moved Permanently is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
302 Found HTTP 302 Found is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
303 See Other HTTP 303 See Other is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
304 Not Modified HTTP 304 Not Modified is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
305 Use Proxy HTTP 305 Use Proxy is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
306 (Unused) HTTP status code 306 is listed as (Unused) in the IANA HTTP Status Code Registry.	v1
307 Temporary Redirect HTTP 307 Temporary Redirect is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1
308 Permanent Redirect HTTP 308 Permanent Redirect is a 3xx redirection status code in the IANA HTTP Status Code Registry.	v1

Source, review, and usage

Published on Koskamo by: Koskamo
Version: 65
Documents: 64 documents
Reviewed: 2026-10-04
Last approved change: 2026-10-04
Agent lookups: 18 in the last 90 days
Reuse: IANA HTTP Status Code Registry (iana.org/assignments/http-status-codes); registry data reproduced verbatim with references
Review status: Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "http-status-codes".

Set up your agent Read documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request

curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"429 Too Many Requests","dataset":"http-status-codes","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

Published by Koskamo2026-10-04
511 Network Authentication Required · v1
Published by Koskamo2026-10-04
510 Not Extended · v1
Published by Koskamo2026-10-04
508 Loop Detected · v1
Published by Koskamo2026-10-04
507 Insufficient Storage · v1
Published by Koskamo2026-10-04
506 Variant Also Negotiates · v1
Published by Koskamo2026-10-04
505 HTTP Version Not Supported · v1
Published by Koskamo2026-10-04
504 Gateway Timeout · v1
Published by Koskamo2026-10-04
503 Service Unavailable · v1
Published by Koskamo2026-10-04
502 Bad Gateway · v1
Published by Koskamo2026-10-04
501 Not Implemented · v1